MikroTik

andyh747

I would post one small update to the guide - if you will ever plan to put switch aware of vlans (Flex mini doesn't care about them), between LHG and USG you will need to add network in ubiquiti with matching VLAN ID - it can be even one host only like 192.168.2.1/30 disable DHCP on network and you ...

andyh747

Have a look at Zyxel LTE range. They have some good outdoor units. Setup is much easier and they work well. Possibly not quite the same antenna gain as from the MikroTik LHG but worth a look.

andyh747

Yes I agree completely and there’s no real explanation as to why this is needed. The lease time is set to 1 day so it’s not that causing it. I have a few other things to check but was hoping to cover all the bases and ensure it wasn’t related to IPv6 issues. Everything else connects fine although th...

andyh747

I’ve setup a MikroTik SXT LTE6 unit for a customer and all has worked well for a year or so. However they asked me to install some Nest Protect smoke alarms. The Protects connected to the network initially without any problem but they keep dropping off the WiFi network and I’m wondering if this is c...

andyh747

I was getting script run errors with the log showing not enough permissions. I ticked the box not requiring permissions and the scripts are now running when the LTE connection goes down. Just need to fully test now on a live setup. Thanks SiB for posting the scripts and all the work you've done on it.

andyh747

OK I've posted my config below. If someone could have a look to see if the UP-script and Down-script is correct that would be appreciated. [admin@MikroTik] > /export # oct/11/2020 14:07:32 by RouterOS 6.45.9 # software id = RMT0-MA7S # # model = RBLHGR # serial number = ************* /interface lte ...

andyh747

I'm trying to use Sib's script to monitor and then action disabling/enabling the LTE interface on a LHG LTE6 unit.

I'm not experienced with scripting but I simply copied and pasted his scripts. How can I post my config so you can check it?

andyh747

It's a little tricky setting this up but I think you're 90% there. The issue I found with mine was the fact I hadn't put the LHG into a separate switch before going into the main network. I'm assuming you have the LHG plugged into the WAN port on your UDM. Try using a switch prior to the UDM, someth...

andyh747

Apologies still not understanding. Why does the export/import work on ROS6 but not in ROS7. I appreciate the suggestions but why is this necessary when it wasn’t before. For example I had a hardware failure on the modem of an LHG LTE6 running ROS6. I exported the config as I was still able to access...

andyh747

Yes I did from a clean config. I'm trying to export a config from one unit and import to another - surely that's the point of restore, especially for installers who need to replicate configs across multiple units. I've never had this problem with all other LTE products which are running ROS6. I can ...

andyh747

Thanks for the reply.

Tried your suggestion but it failed. When importing I receive the following:

andyh747

Yes the transfer seems very flaky, especially in ROS7. I take the point about the MAC address as I had read that somewhere else. However what seems to be happening here is that I’m only getting a partial config transfer/import. I get the wifi settings but most of the other config is missing includin...

andyh747

Ok tried again but same result. The Chateau loses IP address and it seems only some of the config has been restored - see below. So what am I doing wrong? # jan/01/2002 01:03:53 by RouterOS 7.0 # software id = QCEQ-EBBV # # model = RBD53G-5HacD2HnD # serial number = D7B00CFD7EC9 /interface bridge ad...

andyh747

I had a delay set of 15s. I’ll try it with 20s.
When I restored from the rsc file I had the following:

No IP address on the Chateau
No DHCP server

It must have had a corruption of some sort. I’ll try it again with the suggested delay.

andyh747

Thanks for the reply.

Couldn't find any of those lines in my config. I've attached the config file in case anyone spots anything.

andyh747

Having bought several of these I'm struggling to backup the configuration and restore to a new unit. On ROS6 I would always use the backup and restore options in Files but according to support this doesn't currently work in ROS7 and you need to Export the config and then use that backup to restore. ...

andyh747

Thanks SiB that’s great.

andyh747

Thanks SiB, really appreciate your reply. I couldn't find that in the documentation and support had told me the old cell lock command worked. So just to be clear I need to lock to a mast with EARFCN of 1392 and cellID 156. At the Terminal prompt I just enter: interface/lte/at-chat lte1 input="a...

andyh747

I'm trying to use cell lock on a Chateau LTE12 unit running RouterOS 7.0 - stable version when checking for updates. I have done this on other Mikrotik LTE devices using the command /interface lte1 at-chat lte1 input="AT*Cell=2,3,,<EARFCN>,<CellID>". However this is not working on the Chat...

andyh747

No rush at all and thanks for the help. The system is working fine now according to the customer so changing the MTU has definitely solved the issue for now.

andyh747

Thanks for that information, really helpful.

This is in mainland UK in the Gloucestershire/Herefordshire region.

Any contacts you have would be great as I'd like to ascertain the reasons for this behaviour.

andyh747

Thanks I'll send a support request. However it hasn't really answered the question. Three mobile causes problems with an MTU of 1500. I've now confirmed this with an SXT LTE6 and an LHG LTE6. I'd like to know why the MTU being set at 1500 on this particular network causes web page loading to hang. H...

andyh747

Thanks for the reply. I've had this now at two sites and it's only now I'm realising it was the MTU setting causing the problem. It only happens with Three and no other UK network - I've used Vodafone, O2, and EE with no issues on an MTU of 1500. Tech support from Three in the UK is non existent. Yo...

andyh747

It appears that the MTU setting was the issue. The default is 1500 which was causing the problem. Changing to 1400 seems to have cured the issue - I changed the MTU last night before grabbing the config but only received notification that it seems to have worked. The question is why does Mikrotik ha...

andyh747

Thanks for reply. No errors in the log that I can see. No router behind SXT, it's acting as router. Config below: # dec/03/2020 20:41:00 by RouterOS 6.47.8 # software id = BQMS-Z1ZQ # # model = RBSXTR # serial number = xxxxx /interface ethernet set [ find default-name=ether1 ] mac-address=48:8F:5A:3...

andyh747

Hi All, Could do with some help and advice on a recent install I've done with an SXT LTE6 kit connected to the Three mobile network. The connection itself is fine with excellent signal strength, no drops and great speeds in excess of 50mbps download. The problem is on the client devices (iPhones, iP...

andyh747

Thanks for finding that information.

A little strange it just started happening though. I would be interested to know why this suddenly started and why it appears to flip flop constantly according to the logs.

I'll try to disable it even though I'm still unsure what it actually does.

andyh747

Quick update on this issue. Turns out the drops were down to a poor connection on the ethernet from the patch panel to the switch. The fault was with the patch panel and once bypassed all worked perfectly for two weeks without a single drop. However the logs which I get emailed to me are showing odd...

andyh747

Thanks for reply. Yes that makes sense.

andyh747

Hi, Can anyone tell me what the following means in the logs of an LHG LTE6 unit: 12:34:29 lte,async lte1: rcvd 12:34:29 lte,async lte1: rcvd +MMSG: 1, 1 12:34:29 lte,async lte1: rcvd 12:34:29 lte,async lte1: rcvd +CMGL: 19,1,,126 12:34:29 lte,async lte1: rcvd 14:28:01 lte,async,event lte1: +CMT: ,13...

andyh747

Yes I agree the loop isn't ideal. I shall look through your script and see if I can incorporate that instead.

Thanks for the information.

andyh747

Ok revised script below which seems to work well. It's sending a text when the LTE goes down then disables/enables the connection again. The only thing I'm missing is the sending of an SMS when the connection comes back up. If I add that to this script which is run in scheduler every 2mins then it w...

andyh747

Yes have read those posts and helpful in analysing LTE connection but nothing about sending an SMS for a down connection and another for an up connection. Also the issue I'm seeing is solved with just a disable/enable LTE interface command so no requirement to reboot. This script seems to work well ...

andyh747

Hi, I have an LHG unit deployed which is having an odd issue where internet is lost but the LTE interface remains connected. Not sure of the reason but may be related to an IP address allocated on CGNAT becoming inactive but the LHG doesn't recognise the failure. A reboot solves the problem. I'm loo...

andyh747

I managed to get it working but not brilliantly. Accessing the management interface after Passthrough is flaky at best. Really poor support from Mikrotik and no clear instructions on how to achieve this relatively simple option. There are numerous LTE routers out there with a simple Passthrough sele...

andyh747

I don’t think that should be an issue for you. The other ports will simply act as non tagged ports. The port the LHG is connected to would be tagged as VLANxx where xx is the VLAN set in the LHG for Passthrough. It’s the WAN interface the UDM is using for internet provided by the LHG. The other port...

andyh747

I was looking for a step by step guide using the GUI but it appears most Mikrotik users stick with using CLI commands via the Terminal. Most things can be configured via the GUI but Mikrotik insist in putting all of their wiki guidance in CLI format. I can advise how to get the unit into Passthrough...

andyh747

Good suggestion, many thanks.

I'll give that a go.

andyh747

Thank you for that link. Very helpful.

However it seems that only works until a reboot. That defeats the reason I need to use it. I want to ensure a cell lock on a reboot due to power cut or similar.

Is there a way to ensure cell lock is saved to the configuration and remains active on reboot?

andyh747

Hi all, I’m looking for a way to lock the LTE connection to a specific mast if you know the mast details (eNB, operator etc). Is this possible and is there also a way to create a fail over in case that mast you’ve set goes down. Ideally it would be useful to have a lock to a specific mast and if thi...

andyh747

OK I am getting nowhere with this and hope someone can reach out and provide some help. After reading various threads on IP Passthrough and management on a LHG, I've tried to set mine up matching what was discussed. The advice seems to be to use IP Passthrough on the VLAN interface and management on...

andyh747

SiB, Thanks for taking the time to reply and point me in the right direction. I know this stuff is easy for you but some of us struggle with getting these things to work. I've put my UHG in safe mode and had a go at configuring a VLAN for management but before I commit to actioning it, could you loo...

andyh747

Can you describe how to set this up so you can access the UHG via a VLAN?

andyh747

Ok switching off DHCP has indeed fixed the problem. So to summarise for anyone else having difficulty here’s a quick guide to setting IP Passthrough via WebFig: 1. Setup your LTE interface as normal with the correct APN (this can be set in Interfaces - LTE tab - LTE APN) 2. In either QuickSet or Web...

andyh747

Ok thanks for the reply. So I must disable DHCP as well as activate IP Passthrough. I thought that by activating IP Passthrough DHCP would be automatically disabled as it is no longer required and no longer relevant on the UHG side. It really should do this automatically as there is no need for it t...

andyh747

I’ve searched through the forums and I know there is quite a lot of posts on this subject but I haven’t been able to solve my problem with this issue so far. I need to put a UHG LTE6 into IP Passthrough mode so it passes the WAN IP address directly to the router it’s connected to. I’ve done this wit...

andyh747

I am new to the Mikrotik products and have chosen a WAP LTE Kit for a neighbour to replace their woeful broadband service. I'm trying to get the unit into passthrough mode but am struggling as keep getting an error stating passthrough cannot be on a slave interface. This is obviously a config issue ...

andyh747

Thanks Craig.

Yes I’m using 3internet as the APN for exactly that reason. Makes outside access much easier.

Thanks again

Andy

andyh747

Thanks Craig. Not a silly question at all.

This is the WAPR LTE so I don’t think directional is critical like the SXT.

Have played around with direction anyway and no real difference.

andyh747

Update: OK after further changing of the LTE settings I managed to get the Mikrotik connected to the exact same cell ID as all the other LTE modems I've tried. However the speed is still under half what the others are giving - 8mbps for Mikrotik and over 23mbps for the others. I think I'm going to h...

andyh747

Thanks for the reply and trying to help. I've already locked the unit into 3G as that is what my other devices are on and is the fastest connection. I've also tried just using 4G (LTE) but again this doesn't increase speed. What I did notice is the Mikrotik is connecting to a different cell ID to th...

andyh747

Thanks Craig. That's very helpful and appreciated. I used the CLI method linked to above to see if that would work. It seems to have put the router in bridge mode as I now don't have any ability to alter the IP address of the router or change DHCP settings so I assume it's now bridged. That's one of...

andyh747

Thanks for the link. I had already found that but was hoping there was a way to do it through the webfig rather than the CLI. I assume Bridge mode has to be set using command line instructions rather than any other method?

andyh747

This is my first Mikrotik router and I am trying to set this up to provide an LTE connection to my main router. I simply want to place the WAPR into bridge mode so it passes the public IP provided by the LTE connection to my main router which will handle all DHCP, NAT and routing functions. I have l...

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